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A066148 as a simple table

na(n)
13
27
319
431
543
653
767
873
979
1097
11103
12107
13109
14127
15139
16149
17163
18197
19271
20283
21307
22313
23331
24367
25379
26397
27409
28419
29421
30431
31433
32439
33443
34457
35463
36487
37491
38499
39523
40547
41571
42593
43599
44619
45643
46673
47683
48691
49739
50751
51773
52797
53811
54821

[3,7,19,31,43,53,67,73,79,97,103,107,109,127,139,
 149,163,197,271,283,307,313,331,367,379,397,409,
 419,421,431,433,439,443,457,463,487,491,499,523,
 547,571,593,599,619,643,673,683,691,739,751,773,
 797,811,821]